Christoph Hellwig wrote:> Add a generic implementation of the ipc demultiplexer syscall. Except for> s390 and sparc64 all implementations of the sys_ipc are nearly identical.> > There are slight differences in the types of the parameters, where mips> and powerpc as the only 64-bit architectures with sys_ipc use unsigned long> for the "third" argument as it gets casted to a pointer later, while it> traditionally is an "int" like most other paramters. frv goes even further> and uses unsigned long for all parameters execept for "ptr" which is a pointer> type everywhere. The change from int to unsigned long for "third" and back> to "int" for the others on frv should be fine due to the in-register calling> conventions for syscalls (we already had a similar issue with the generic> sys_ptrace), but I'd prefer to have the arch maintainers looks over this> in details.> > Except for that h8300, m68k and m68knommu lack an impplementation of the> semtimedop sub call which this patch adds, and various architectures have> different strategies for the SHMAT version 1 case which apparently never> gets used - at least on i386 it seems superflous as the compat code on> x86-64 and ia64 doesn't even bother to implement it.> > > Signed-off-by: Christoph Hellwig <hch@lst.de>